white-bellied swallow whi·te·bel·liedswallow uncommon noun 1. bluish-green-and-white North American swallow; nests in tree cavities Synonymswhite-bellied swallowtree swallowIridoprocne bicolor Related words Broader terms swallow WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
